sensors Mode-S transponder
4247D1
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to VP-CIX · BOEING 737 MAX 8
- Hex
- 4247D1
- Octal
- 20443721
- Decimal
- 4,343,761
- Country
- GB
- Tail
- VP-CIX
- Type
- B38M
- Flights observed
- 161
- Distinct callsigns
- 19
- Country
- GB
- Last broadcast
- Jul 26, 20:55 UTC
Current position
Country allocation
The ICAO 24-bit address 4247D1 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CAY202 | Cayman Airways | 16 | 2026-07-20 |
| CAY441 | Cayman Airways | 15 | 2026-07-25 |
| CAY203 | Cayman Airways | 15 | 2026-07-20 |
| CAY440 | Cayman Airways | 14 | 2026-07-25 |
| CAY794 | Cayman Airways | 13 | 2026-05-17 |
| CAY200 | Cayman Airways | 12 | 2026-07-24 |
| CAY104 | - | 11 | 2026-07-22 |
| CAY795 | Cayman Airways | 10 | 2026-05-17 |
| CAY102 | - | 10 | 2026-07-16 |
| CAY331 | Cayman Airways | 7 | 2026-07-26 |
| CAY106 | Cayman Airways | 6 | 2026-07-17 |
| CAY103 | - | 6 | 2026-07-10 |
| CAY852 | Cayman Airways | 5 | 2026-06-01 |
| CAY201 | - | 5 | 2026-07-03 |
| CAY107 | Cayman Airways | 5 | 2026-07-20 |
| CAY105 | Cayman Airways | 4 | 2026-06-16 |
| CAY793 | - | 3 | 2026-07-23 |
| CAY792 | Cayman Airways | 2 | 2026-07-22 |
| CAY330 | - | 2 | 2026-07-05 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | CAY331 | AUS → GCM | Jul 26, 18:30 UTC | Jul 26, 20:55 UTC | 2h 25m |
| 2026-07-25 | CAY441 | DEN → GCM | Jul 25, 20:20 UTC | Jul 26, 16:05 UTC | 19h 46m |
| 2026-07-25 | CAY441 | DEN → GCM | Jul 25, 19:50 UTC | Jul 26, 16:05 UTC | 20h 16m |
| 2026-07-25 | CAY440 | GCM → DEN | Jul 25, 14:00 UTC | Jul 25, 17:35 UTC | 3h 35m |
| 2026-07-24 | CAY440 | GCM → DEN | Jul 24, 21:00 UTC | Jul 25, 17:35 UTC | 20h 35m |
| 2026-07-24 | CAY200 | GCM → TPA | Jul 24, 17:50 UTC | Jul 24, 18:50 UTC | 1h 0m |
| 2026-07-23 | CAY793 | - | Jul 23, 18:20 UTC | Jul 24, 18:15 UTC | 23h 55m |
| 2026-07-23 | CAY793 | - | Jul 23, 17:00 UTC | Jul 23, 19:45 UTC | 2h 45m |
| 2026-07-22 | CAY792 | GCM → JFK | Jul 22, 19:40 UTC | Jul 23, 02:30 UTC | 6h 50m |
| 2026-07-22 | CAY104 | - | Jul 22, 17:25 UTC | Jul 22, 17:55 UTC | 30m |
| 2026-07-20 | CAY203 | TPA → GCM | Jul 20, 21:35 UTC | Jul 20, 22:25 UTC | 50m |
| 2026-07-20 | CAY202 | GCM → TPA | Jul 20, 15:15 UTC | Jul 20, 19:40 UTC | 4h 25m |
| 2026-07-20 | CAY107 | MIA → GCM | Jul 20, 01:25 UTC | Jul 20, 13:10 UTC | 11h 45m |
| 2026-07-19 | CAY331 | AUS → GCM | Jul 19, 18:15 UTC | Jul 19, 23:25 UTC | 5h 10m |
| 2026-07-18 | CAY441 | DEN → GCM | Jul 18, 20:20 UTC | Jul 19, 16:00 UTC | 19h 40m |
| 2026-07-18 | CAY441 | DEN → GCM | Jul 18, 20:00 UTC | Jul 19, 16:00 UTC | 20h 0m |
| 2026-07-18 | CAY440 | - | Jul 18, 01:45 UTC | Jul 18, 17:45 UTC | 16h 1m |
| 2026-07-17 | CAY106 | GCM → MIA | Jul 17, 16:24 UTC | Jul 17, 23:20 UTC | 6h 55m |
| 2026-07-16 | CAY203 | TPA → GCM | Jul 16, 22:19 UTC | Jul 17, 19:55 UTC | 21h 35m |
| 2026-07-16 | CAY203 | TPA → GCM | Jul 16, 21:10 UTC | Jul 17, 19:55 UTC | 22h 45m |
| 2026-07-16 | CAY202 | - | Jul 16, 15:25 UTC | Jul 16, 19:40 UTC | 4h 15m |
| 2026-07-16 | CAY102 | - | Jul 16, 13:00 UTC | Jul 16, 13:30 UTC | 30m |
| 2026-07-13 | CAY107 | - | Jul 13, 02:01 UTC | Jul 13, 02:30 UTC | 30m |
| 2026-07-12 | CAY331 | - | Jul 12, 18:20 UTC | Jul 12, 23:55 UTC | 5h 35m |
| 2026-07-11 | CAY441 | - | Jul 11, 20:20 UTC | Jul 12, 16:05 UTC | 19h 45m |
| 2026-07-11 | CAY441 | DEN → AUS | Jul 11, 19:55 UTC | Jul 12, 16:05 UTC | 20h 10m |
| 2026-07-11 | CAY440 | - | Jul 11, 14:00 UTC | Jul 11, 17:35 UTC | 3h 35m |
| 2026-07-10 | CAY103 | - | Jul 10, 15:20 UTC | Jul 11, 14:15 UTC | 22h 55m |
| 2026-07-10 | CAY102 | - | Jul 10, 13:00 UTC | Jul 10, 13:35 UTC | 35m |
| 2026-07-06 | CAY203 | - | Jul 6, 21:15 UTC | Jul 6, 22:00 UTC | 45m |
| 2026-07-06 | CAY202 | - | Jul 6, 16:00 UTC | Jul 6, 20:00 UTC | 4h 0m |
| 2026-07-05 | CAY331 | - | Jul 5, 21:50 UTC | Jul 6, 13:55 UTC | 16h 5m |
| 2026-07-05 | CAY330 | - | Jul 5, 13:55 UTC | Jul 5, 16:05 UTC | 2h 10m |
| 2026-07-04 | CAY330 | TPA → AUS | Jul 4, 19:25 UTC | Jul 5, 16:05 UTC | 20h 40m |
| 2026-07-04 | CAY200 | - | Jul 4, 17:25 UTC | Jul 4, 18:20 UTC | 55m |
| 2026-07-03 | CAY200 | - | Jul 3, 20:20 UTC | Jul 4, 18:20 UTC | 22h 0m |
| 2026-07-03 | CAY201 | - | Jul 3, 20:10 UTC | Jul 4, 18:15 UTC | 22h 5m |
| 2026-07-03 | CAY200 | - | Jul 3, 17:25 UTC | Jul 3, 18:40 UTC | 1h 15m |
| 2026-07-02 | CAY200 | TPA → TPA | Jul 2, 20:45 UTC | Jul 3, 18:40 UTC | 21h 55m |
| 2026-07-02 | CAY202 | - | Jul 2, 15:25 UTC | Jul 2, 19:25 UTC | 4h 0m |
| 2026-07-02 | CAY102 | - | Jul 2, 13:00 UTC | Jul 2, 13:30 UTC | 30m |
| 2026-06-29 | CAY107 | - | Jun 29, 02:09 UTC | Jun 29, 02:39 UTC | 30m |
| 2026-06-28 | CAY331 | - | Jun 28, 18:34 UTC | Jun 29, 00:20 UTC | 5h 45m |
| 2026-06-27 | CAY441 | DEN → AUS | Jun 27, 22:40 UTC | Jun 28, 16:05 UTC | 17h 25m |
| 2026-06-27 | CAY440 | GCM → DEN | Jun 27, 16:24 UTC | Jun 27, 19:55 UTC | 3h 30m |
| 2026-06-26 | CAY103 | MIA → GCM | Jun 26, 15:49 UTC | Jun 26, 16:09 UTC | 20m |
| 2026-06-25 | CAY102 | GCM → MIA | Jun 25, 17:25 UTC | Jun 26, 13:45 UTC | 20h 20m |
| 2026-06-22 | CAY203 | - | Jun 22, 22:19 UTC | Jun 22, 23:10 UTC | 50m |
| 2026-06-22 | CAY202 | GCM → TPA | Jun 22, 15:24 UTC | Jun 22, 20:39 UTC | 5h 15m |
| 2026-06-22 | CAY107 | - | Jun 22, 01:29 UTC | Jun 22, 13:19 UTC | 11h 50m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the VP-CIX page for operator, model, and routing details .